Compilare: main.cpp: In function 'int main()': main.cpp:3:433: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized] 3 | using namespace std;ifstream fin("startrek.in");ofstream fout("startrek.out");int v[N],tl[N],tr[N],l[N],r[N];int main(){int n,m,p,q,x,y,i,a;fin>>n>>p>>q>>m;for(i=1;i<=n;i++)tl[i]=1<<30;for(i=1;i<=m;i++){fin>>x>>y;tl[y]=min(tl[y],x);tr[y]=max(tr[y],x);}for(i=1;i<=n;i++){l[i]=max(tr[i],l[i-1]+p);r[i]=min(tl[i]+q-1,min(r[i-1]+q,tl[i+1]-1));if(l[i]<=n)a=i;}for(i=a,x=n;i>0;i--){y=min(x-p+1,r[i-1]+1);while(x>=y){v[x]=i;x--;}}fout<<a<<'\n';for(i=1;i<=n;i++)fout<<v[i]<<' ';return 0;} | ^~~~